F3Serious
Fisher & Paykel Dishwasher F3 Error Code
Water does not reach required temperature or heater circuit is open. Wash cycles may not heat water.
Common causes
- Failed heating element
- Faulty thermistor (temperature sensor)
- Loose wiring to heating element
- Control board relay failure
How to fix it
- Check continuity of heating element with multimeter (should be ~10-20 ohms)
- Inspect thermistor resistance at room temp (approx 10k-50k ohms)
⚠ When to call a pro: Unless you are comfortable testing electrical components with a multimeter and disconnecting wires
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Always unplug the appliance (and turn off the water for washers/dishwashers) before inspecting. These guides are for information only and are not a substitute for a professional repair.